Anyone who still doubts FWD.us' political bonafides can at least admit this much: It knows how to make an old-fashioned attack ad.

The pro-immigration political action committee led by Mark Zuckerberg just posted a new video to its YouTube page that attacks gay rights and immigration troll Steve King (R-IA) over controversial statements he made to BreitbartNews arguing that undocumented immigrants brought to the United States should not be allowed to serve in the military. The spot has all the trappings of classic attack ads, from its ominous black-and-white freeze frames to its horror-movie voiceover:

Following a red-white-and-blue-saturated intro that hails the glories of our troops, the ad takes a dark turn. "Instead of supporting our military," the narrator says, "Steve King, a Republican member of Congress, insults the brave soldiers who are immigrants and who would proudly serve. Instead of supporting immigrants who want to serve, he would deport them."

The ad may seem a little over-the-top, but it puts forth a pretty accurate characterization of King's views on immigration. He recently said, "As soon as (immigrants brought to the US as children) raise their hand and say ‘I’m unlawfully present in the United States,’ we’re not going to take your oath into the military, but we’re going to take your deposition, and we have a bus for you to Tijuana."

Where to begin: First off, regarding the Tijuana reference, someone should inform King that only 29 percent of US immigrants are from Mexico. Secondly, immigrants who are willing to risk their lives for the United States have earned their right to reside here, no?

As for FWD.us, this is a far cry from some of its early ads that came out in support of Arctic oil drilling and the Keystone XL pipeline. The intent of these ads was to scratch the backs of Congresspeople who might support comprehensive immigration reform, but only if other demands that matter to their constituents are met. That sparked widespread outrage in the many left-leaning, environmentally-friendly corners of Silicon Valley and FWD.us lost the support of high-profile figures like Elon Musk, who knows a thing or two about saving the planet.

With this ad, however, FWD.us hedges no bets, zeroing in on its mission of immigration reform, and going for the jugular of a powerful incumbent who stands in its way. It may look a little dirty, but there's nothing dirty about telling the truth.